You post here on the DSL board. In this area there are unfortunately no Vodafone technicians as in the cable sector, but telecommunications technicians always have to be commissioned to activate, as Telekom has the sovereignty over the so-called "last mile", the subscriber line TAL. Unfortunately, these often lead to problems as you describe them. Vodafone cannot change anything about that, you could only call in the Federal Network Agency, but nobody will be able to help you with that in the short term.
